250 ohm speakers

Make and model of the speakers?
Are they small enough to fit into a headphone? That would be the only application I can think of.
You can use them on any amplifier since higher impedance is always safe but it cuts the output power by a huge amount. A 200 watt per channel into 8 ohm amp would put out about 6 watts into a 250 ohm load.
 

hollywoodimmortals

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Those should have a field coil on them like these
http://www.ebay.com/itm/Vintage-1930s-Magnavox-12-034-Speaker-Pair-Models-302-and-I2CI3I-250-Ohms-/311917726379?nma=true&si=BvZmgJ08iIvc1gfb555Hcej%252BMII%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557
http://www.ebay.com/itm/Vintage-MAGNAVOX-12-Field-Coil-Speaker-Pair-250-Ohms-/311914603052?hash=item489f8f222c:g:XncAAOSwEH9ZZZdt
They will require a power supply for their electromagnets as well as an amplifier.
https://en.wikipedia.org/wiki/Field_coil_loudspeaker
 

hollywoodimmortals

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they are 1930's Magnavox 12 inch speakers how can I make them work
 
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